Disintegration and Biodegradation in Soil of PBAT Mulch Films: Influence of the Stabilization Systems Based on Carbon Black/Hindered Amine Light Stabilizer and Carbon Black/Vitamin E

Souza, Patrícia Moraes Sinohara; Coelho, Felipe Mourão; Sommaggio, Laís Roberta Deroldo; Marin-Morales, Maria Aparecida; Morales, Ana Rita

doi:10.1007/s10924-019-01455-6

Cited by 28 publications

(14 citation statements)

References 29 publications

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“…Saadi et al used the highest temperature and added compost into the soil. PBAT degradation reported in the Saadi paper showed slower degradation than in the papers from Palsikowski et al and Souza et al This can be explained by a relatively thick sample (0.01 cm) and high MW of PBAT (140,000 g/mol) used in Saadi et al compared to the other papers (Palsikowski et al: thickness, 0.003 cm; MW, 44,000 g/mol; Souza et al: thickness, N/A; MW, 31,000 g/mol). Plastics with high MW are less susceptible to microbial actions .…”

Section: Definitions Of Biodegradable Plastics and Plastic Biodegrada...mentioning

confidence: 71%

“…Saadi et al used the highest temperature and added compost into the soil. PBAT degradation reported in the Saadi paper 122 showed slower degradation than in the papers from Palsikowski et al 71 and Souza et al 123 This can be explained by a relatively thick sample (0.01 cm) and high MW of PBAT (140,000 g/mol) used in Saadi et al 122 125 Thicker plastics also need a longer time to degrade. 48 According to ASTM D5988, soil samples should be obtained from at least three diverse locations to maximize biodiversity.…”

Section: Biodegradation (%)mentioning

confidence: 87%

“…Therefore, it is difficult to compare the soil biodegradability of PBAT from one manufacturer with PBAT from another manufacturer because of differences in the MW, sample preparation, and even the soil activity. ASTM D6400, shown in Figure 7, covers the requirements for labeling biodegradable plastics as compostable in industrial Palsikowski et al 71 Saadi et al 122 Souza et al 123 Pinheiro et al 124 Soil conditions pH 6.0−8.0 6. The growth rate from the compost containing the test materials must be greater than 90% compared with the corresponding blank composts.…”

Section: Biodegradation (%)mentioning

confidence: 99%

“…Comparison of (A) cellulose degradation and (B) PBAT biodegradation in soil according to ASTM D5988. (Data extracted from refs and − ).…”

Section: Definitions Of Biodegradable Plastics and Plastic Biodegrada...mentioning

confidence: 99%

“…Thus, this review investigated characteristics of the tested materials and soil mediums and compared the biodegradation rates. Figure shows an illustrative example of biodegradation rates of cellulose and PBAT according to ASTM D5988 from four different studies. ,− The different degradation rates may be attributed to different temperatures, molecular weight (MW) of PBAT, sample dimensions, and ratios of carbon content in samples to soil. Table summarizes the conditions of samples and soil used in the 4 studies as well as the required conditions to follow ASTM D5988.…”

Section: Definitions Of Biodegradable Plastics and Plastic Biodegrada...mentioning

confidence: 99%

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A Review of Biodegradable Plastics: Chemistry, Applications, Properties, and Future Research Needs

et al. 2023

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Environmental concerns over waste plastics’ effect on the environment are leading to the creation of biodegradable plastics. Biodegradable plastics may serve as a promising approach to manage the issue of environmental accumulation of plastic waste in the ocean and soil. Biodegradable plastics are the type of polymers that can be degraded by microorganisms into small molecules (e.g., H2O, CO2, and CH4). However, there are misconceptions surrounding biodegradable plastics. For example, the term “biodegradable” on product labeling can be misconstrued by the public to imply that the product will degrade under any environmental conditions. Such misleading information leads to consumer encouragement of excessive consumption of certain goods and increased littering of products labeled as “biodegradable”. This review not only provides a comprehensive overview of the state-of-the-art biodegradable plastics but also clarifies the definitions and various terms associated with biodegradable plastics, including oxo-degradable plastics, enzyme-mediated plastics, and biodegradation agents. Analytical techniques and standard test methods to evaluate the biodegradability of polymeric materials in alignment with international standards are summarized. The review summarizes the properties and industrial applications of previously developed biodegradable plastics and then discusses how biomass-derived monomers can create new types of biodegradable polymers by utilizing their unique chemical properties from oxygen-containing functional groups. The terminology and methodologies covered in the paper provide a perspective on directions for the design of new biodegradable polymers that possess not only advanced performance for practical applications but also environmental benefits.

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Section: Definitions Of Biodegradable Plastics and Plastic Biodegrada...mentioning

confidence: 71%

Section: Biodegradation (%)mentioning

confidence: 87%

Section: Biodegradation (%)mentioning

confidence: 99%

“…Comparison of (A) cellulose degradation and (B) PBAT biodegradation in soil according to ASTM D5988. (Data extracted from refs and − ).…”

Section: Definitions Of Biodegradable Plastics and Plastic Biodegrada...mentioning

confidence: 99%

Section: Definitions Of Biodegradable Plastics and Plastic Biodegrada...mentioning

confidence: 99%

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A Review of Biodegradable Plastics: Chemistry, Applications, Properties, and Future Research Needs

et al. 2023

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Nanocomposites of poly(butylene adipate‐co‐terephthalate) containing sepiolite modified with 3‐aminopropyltriethoxysilane and octadecyl isocyanate

Gonçalves,

Barauna,

Pinheiro

et al. 2023

J of Applied Polymer Sci

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The properties of nanocomposites are directly affected by the filler–matrix interaction and therefore surface filler modification is often necessary to improve the mechanical properties of nanocomposites. Our study evaluated surface modification of sepiolite (SEP) on properties of poly(butylene adipate‐co‐terephthalate) (PBAT)‐based nanocomposites. The nanofillers were modified using two organic modifiers, octadecyl isocyanate (OI), and 3‐aminopropyltriethoxysilane (APTES). OI showed higher treatment efficiency than APTES and better results in alkyl groups on the surface of the nanofiller, with crystalline profile, which remained in the nanocomposites. The effect of organo‐sepiolites on the properties of PBAT nanocomposites was investigated by DSC, XRD, TGA, FTIR, scanning electron microscopy (SEM), and mechanical tensile tests. TGA analysis showed that the addition of O‐SEP on PBAT decreases its thermal stability. SEM analysis showed cavities and fiber tips in the matrix associated with clay agglomerates and some untreated clay faces, which impair filler‐matrix interfacial adhesion. Both treatments increased the elastic modulus and preserved the elongation and tensile strength of PBAT and the treatment with OI results in a higher modulus. Although some studies to improve the clay dispersion are necessary, the promising results reveal the potential of using OI and APTES as SEP modifiers to reinforce PBAT or other polyesters.

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Reactively Processed Poly(butylene adipate terephthalate) Composite–Based Multilayered Films with Improved Properties for Sustainable Packaging Applications: Structural Characterization and Biodegradation Mechanism

Bandyopadhyay,

Botlhoko,

Mphahlele

et al. 2024

Macro Chemistry & Physics

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In this study, it is attempted to enhance the properties and biodegradability of poly(butylene adipate terephthalate) (PBAT) using nanocomposite technology to meet the demand for sustainable packaging applications. Two nanoclays containing PBAT composites are reactively processed and integrated into the multilayered films. Reactive processing facilitates the dispersion and distribution of nanoclay particles in the PBAT matrix. The multilayered films comprising reactively processed PBAT composites exhibited a 24.5%–31.5% reduction in the oxygen transmission rate and improved dimensional stability and tensile properties. Moreover, the degradability of the multilayered film comprising reactively processed PBAT composites reached 82% in 180 days. In contrast, a neat PBAT film of similar thickness attained only 53% degradation in the same period. The biodegradation mechanism is proposed based on the topology of the disintegrated films studied using scanning electron microscopy, chemical bond vibrations determined by Fourier‐transform infrared spectroscopy, and structural evolution by small‐ and wide‐angle X‐ray scattering (SWAXS). The SWAXS analysis is used to understand the changes in the degree of crystallinity, long‐range periodic order, and crystalline and amorphous layer thickness of the multilayered films before and after degradation. Such multilayered films can find applications where packaging or biomedical devices cannot be recycled.

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Disintegration and Biodegradation in Soil of PBAT Mulch Films: Influence of the Stabilization Systems Based on Carbon Black/Hindered Amine Light Stabilizer and Carbon Black/Vitamin E

Cited by 28 publications

References 29 publications

A Review of Biodegradable Plastics: Chemistry, Applications, Properties, and Future Research Needs

A Review of Biodegradable Plastics: Chemistry, Applications, Properties, and Future Research Needs

Nanocomposites of poly(butylene adipate‐co‐terephthalate) containing sepiolite modified with 3‐aminopropyltriethoxysilane and octadecyl isocyanate

Reactively Processed Poly(butylene adipate terephthalate) Composite–Based Multilayered Films with Improved Properties for Sustainable Packaging Applications: Structural Characterization and Biodegradation Mechanism

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